Joss Whedon Teases Mysterious New Project 'Much Ado About Nothing'

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"Buffy the Vampire Slayer," "Firefly" and "Dollhouse" fans rejoiced after Nathan Fillion tweeted a link to a site saying principal photography has wrapped on the previously unannounced project, which set the Internet abuzz with speculation.

The site doesn't offer any further details, but the news did spur speculation around the Internet about what the project might be and how Whedon found time to finish it while also working on the upcoming Avengers movie.

Some speculated that it might be his follow-up to the web series Dr. Horrible's Sing-Along Blog. The obvious question, of course, is whether it is in fact some sort of adaptation of the William Shakespeare play.